Home / 78,130.60-117,528.48-70,823.18

Finding the Fourth Proportional to 78,130.60, 117,528.48 and 70,823.18

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Solution

The fourth proportional to 78,130.60, 117,528.48 and 70,823.18 is: 106,536.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,130.60 : 117,528.48 = 70,823.18 : x
  2. Step 2: Convert to fraction form
    78,130.60/117,528.48 = 70,823.18/x
  3. Step 3: Cross multiply
    78,130.60x = 117,528.48 × 70,823.18
  4. Step 4: Simplify right side
    78,130.60x = 8,323,740,694.17
  5. Step 5: Solve for x
    x = 8,323,740,694.17/78,130.60
  6. Step 6: Final answer
    x = 106,536.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.